[Johnson] FS: 455 kHz Filter Partial Kit

Bry Carling bcarling at cfl.rr.com
Sat Jun 19 17:38:15 EDT 2010


For Sale:  455 kHz Filter Partial Kit

This is suitable for a 250 Hz bandwidth CW filter. Has 60 dB
rejection outside the pass band. Connect right after the last i.f. and 
before the detector in almost any receiver design. 
Two pole filter design using tubes - typically like a 
6AK5 and 12AX7. Can also be adapted for use with a modern 
transistor circuit.

Comes with all instructions, schemtic, complete article and
two 455 kHz hc6u crystals.

Two sockets available for an additional $5.00 with this kit.

I currently have eight of these kits left, and they are available for 
$32.00 each plus shipping.


73 - Bry, AF4K



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